Diethylacetylisocyanate.



UNIE

STATEd PATENT OFFICE.v

J'l 'RGEN CALL-SEN, 0F ELBERFELID, GERMANY, ASSIGNOR- T0 SYNTHETIC PATENTS $9.

INQ, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

DIETHYLACETYLISOCYANATE.

No Drawing.

Specification of Letters Patent.

Application filed December 12, 1913.

Patented June 2, 1914.

Serial No. 806,214

To all whom it may concern:

Be it known that I, Jfinenn CALLsnN, doctor of philosophy, chemist, citizen of the German Empire, residing at Elberfeld, Germany, have invented new and useful Improvements in Diethylacetylisocyanate, of which the following is a specification.

My invention relates to the manufacture and production of the hithert unknown d iethylacetylisocyanate being a technically valuable compound. It can be obtained by treatingv diethylacetyl bromid or chlorid with a silver or mercury 7 while the liquid is stirred. The salt precipitated is filtered 01f, washed with water and dried. Subsequently 120 parts of this saltare heated in a vessel provided with a cooler and a stirrer with 500 partsof petrolether and 66 parts of diethylacetylchlorid. The mixture is filtered, the petrolether distilled off and the residue is distilled in vacuo.

I claim As a new article of manufacture the diethylacetylisocyanate having most probably the formula:

which is a limpid oil boiling at from 67-72 C. under a pressure of mm.; soluble in petrolether, ligroin and benzene; and yieldingdiethylacetylcarbamid with ammonia, substantially as described.

In testimony whereof I have hereunto set my hand in the presenoe of two subscribing witnesses J URGEN CALLSENQ Witnesses ALBERT NUFER, PAUL KAUFMANN. 

